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2. Power wrench - Wikipedia

   en.wikipedia.org/wiki/Power_wrench

   An air ratchet wrench is very similar to hand-powered ratchet wrenches in that it has the same square drive, but an air motor is attached to turn the socket drive. Pulling the trigger activates the motor which turns the socket drive. A switch is provided to change which direction the socket drive turns. [1]

3. Impact wrench - Wikipedia

   en.wikipedia.org/wiki/Impact_wrench

   A 1/2" drive pistol-grip air impact wrench. An impact wrench (also known as an impactor, impact gun, air wrench, air gun, rattle gun, torque gun, windy gun) is a socket wrench power tool designed to deliver high torque output with minimal exertion by the user, by storing energy in a rotating mass, then delivering it suddenly to the output shaft ...

4. Central African Shear Zone - Wikipedia

   en.wikipedia.org/wiki/Central_African_Shear_Zone

   The Central African Shear Zone (CASZ) (or Shear System) is a wrench fault system extending in an ENE direction from the Gulf of Guinea through Cameroon into Sudan. [1] The structure is not well understood. As of 2008, there was still no general agreement about how the individual shears along the lineament link up. [2]

5. Pneumatic tool - Wikipedia

   en.wikipedia.org/wiki/Pneumatic_tool

   A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air supplied by an air compressor. Pneumatic tools can also be driven by compressed carbon dioxide (CO 2) stored in small cylinders allowing for portability. [1]

6. Focal mechanism - Wikipedia

   en.wikipedia.org/wiki/Focal_mechanism

   The moment tensor solution is displayed graphically using a so-called beachball diagram. The pattern of energy radiated during an earthquake with a single direction of motion on a single fault plane may be modelled as a double couple, which is described mathematically as a special case of a second order tensor (similar to those for stress and strain) known as the moment tensor.

7. Chicago Pneumatic - Wikipedia

   en.wikipedia.org/wiki/Chicago_Pneumatic

   In 1970, the CP611 impact wrench was used in the steel erection phase of the World Trade Centers (New York City). Sold for several years into industrial markets, CP torque impact wrenches were introduced in the 1970s into the automotive market. In 1987, Chicago Pneumatic became part of the Swedish conglomerate Atlas Copco. During 1988, more new ...